常见例句双语例句But if we descend into the sea to a depth of 33 feet, the pressure on our bodies increases by 15 pounds extra per square inch.但是，如果我们下降到海底深度达33英尺处，我们身体所承受的压力每平方英寸就会再增加15磅。blog.sina.com.cn 返回 pounds per square feet